The Experts below are selected from a list of 792 Experts worldwide ranked by ideXlab platform
David Zhigang Wang - One of the best experts on this subject based on the ideXlab platform.
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visible light promoted vinylation of tetrahydrofuran with alkynes through direct c h bond functionalization
ChemInform, 2015Co-Authors: Jing Li, Jing Zhang, David Zhigang WangAbstract:The title reaction uses eosin Y as the catalyst, tBuOOH as the external oxidant, and a 45 W household Lightbulb as the light source.
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visible light promoted vinylation of tetrahydrofuran with alkynes through direct c h bond functionalization
Organic Letters, 2015Co-Authors: Jing Zhang, David Zhigang WangAbstract:Mild and direct C–H bond functionalizations and vinylations of tetrahydrofuran with alkynes have been accomplished through visible light photocatalysis, yielding a range of vinyl tetrahydrofurans under the synergistic actions of organic dye-type photocatalyst eosin Y, tert-butyl hydroperoxide (t-BuOOH), and a 45 W household Lightbulb. A significant kinetic isotope effect (KIE) was recorded, which helps shed light on the mechanistic course.
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Visible-Light-Promoted Vinylation of Tetrahydrofuran with Alkynes through Direct C–H Bond Functionalization
2015Co-Authors: Jing Zhang, Haibo Tan, David Zhigang WangAbstract:Mild and direct C–H bond functionalizations and vinylations of tetrahydrofuran with alkynes have been accomplished through visible light photocatalysis, yielding a range of vinyl tetrahydrofurans under the synergistic actions of organic dye-type photocatalyst eosin Y, tert-butyl hydroperoxide (t-BuOOH), and a 45 W household Lightbulb. A significant kinetic isotope effect (KIE) was recorded, which helps shed light on the mechanistic course
Serge L Rudaz - One of the best experts on this subject based on the ideXlab platform.
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illumination with solid state lighting technology
IEEE Journal of Selected Topics in Quantum Electronics, 2002Co-Authors: Daniel A Steigerwald, Jerome Chandra Bhat, D Collins, R M Fletcher, M O Holcomb, M J Ludowise, Paul S Martin, Serge L RudazAbstract:High-power light-emitting diodes (LEDs) have begun to differentiate themselves from their more common cousins the indicator LED. Today these LEDs are designed to generate 10-100 lm per LED with efficiencies that surpass incandescent and halogen bulbs. After a summary of the motivation for the development of the high-power LED and a look at the future markets, we describe the current state of high-power LED technology and the challenges that lay ahead for development of a true "solid state lamp." We demonstrate record performance and reliability for high-power colored and white LEDs and show results from the worlds first 100-plus lumen white LED lamp, the solid state equivalent of Thomas Edison's 20-W incandescent Lightbulb approximately one century later.
Wang David Zhigang - One of the best experts on this subject based on the ideXlab platform.
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Visible-Light-Promoted Vinylation of Tetrahydrofuran with Alkynes through Direct C-H Bond Functionalization
organic letters, 2015Co-Authors: Li Jing, Zhang Jing, Tan Haibo, Wang David ZhigangAbstract:Mild and direct C-H bond functionalizations and vinylations of tetrahydrofuran with alkynes have been accomplished through visible light photocatalysis, yielding a range of vinyl tetrahydrofurans under the synergistic actions of organic dye-type photocatalyst eosin Y, tert-butyl hydroperoxide (t-BuOOH), and a 45 W household Lightbulb. A significant kinetic isotope effect (KIE) was recorded, which helps shed light on the mechanistic course.SCI(E)PubMed0ARTICLEdzw@pkusz.edu.c
Jing Zhang - One of the best experts on this subject based on the ideXlab platform.
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visible light promoted vinylation of tetrahydrofuran with alkynes through direct c h bond functionalization
ChemInform, 2015Co-Authors: Jing Li, Jing Zhang, David Zhigang WangAbstract:The title reaction uses eosin Y as the catalyst, tBuOOH as the external oxidant, and a 45 W household Lightbulb as the light source.
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visible light promoted vinylation of tetrahydrofuran with alkynes through direct c h bond functionalization
Organic Letters, 2015Co-Authors: Jing Zhang, David Zhigang WangAbstract:Mild and direct C–H bond functionalizations and vinylations of tetrahydrofuran with alkynes have been accomplished through visible light photocatalysis, yielding a range of vinyl tetrahydrofurans under the synergistic actions of organic dye-type photocatalyst eosin Y, tert-butyl hydroperoxide (t-BuOOH), and a 45 W household Lightbulb. A significant kinetic isotope effect (KIE) was recorded, which helps shed light on the mechanistic course.
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Visible-Light-Promoted Vinylation of Tetrahydrofuran with Alkynes through Direct C–H Bond Functionalization
2015Co-Authors: Jing Zhang, Haibo Tan, David Zhigang WangAbstract:Mild and direct C–H bond functionalizations and vinylations of tetrahydrofuran with alkynes have been accomplished through visible light photocatalysis, yielding a range of vinyl tetrahydrofurans under the synergistic actions of organic dye-type photocatalyst eosin Y, tert-butyl hydroperoxide (t-BuOOH), and a 45 W household Lightbulb. A significant kinetic isotope effect (KIE) was recorded, which helps shed light on the mechanistic course
Daniel A Steigerwald - One of the best experts on this subject based on the ideXlab platform.
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the led Lightbulb are we there yet progress and challenges for solid state illumination
Conference on Lasers and Electro-Optics, 2003Co-Authors: M O Holcomb, Daniel A Steigerwald, D Collins, R M Fletcher, Paul S Martin, Regina B Muellermach, Gerd Mueller, S Eberle, Y K Lim, M R KramesAbstract:Rapid improvement in light emitting diode (LED) performance and an annual multibillion dollar lighting market is motivating worldwide development of LED based illumination systems. In addition to the traditional figures of merit of efficiency and high flux density, the white LED lamps must also have appropriate color characteristics. Current commercial white LED lamps have undesirable color temperatures and uniformity, and inferior color rendering. As discussed below, color uniformity in single phosphor lamps has been improved by deposition of thin uniform phosphor layers conformal to the LED die. Also, 2-phosphor LED lamps with white color characteristics typical of conventional incandescent and halogen sources are described. Furthermore, LED illumination offers additional features not practically achievable with conventional sources.
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illumination with solid state lighting technology
IEEE Journal of Selected Topics in Quantum Electronics, 2002Co-Authors: Daniel A Steigerwald, Jerome Chandra Bhat, D Collins, R M Fletcher, M O Holcomb, M J Ludowise, Paul S Martin, Serge L RudazAbstract:High-power light-emitting diodes (LEDs) have begun to differentiate themselves from their more common cousins the indicator LED. Today these LEDs are designed to generate 10-100 lm per LED with efficiencies that surpass incandescent and halogen bulbs. After a summary of the motivation for the development of the high-power LED and a look at the future markets, we describe the current state of high-power LED technology and the challenges that lay ahead for development of a true "solid state lamp." We demonstrate record performance and reliability for high-power colored and white LEDs and show results from the worlds first 100-plus lumen white LED lamp, the solid state equivalent of Thomas Edison's 20-W incandescent Lightbulb approximately one century later.